Comment # 5
on bug 109135
from iive@yahoo.com
(In reply to rmuncrief from comment #2) [...] > Here's the grub line I use for all testing: > GRUB_CMDLINE_LINUX_DEFAULT="quiet > resume=UUID=b4f71480-8fe3-43c2-99c9-fc3f5687545b libata.atapi_passthru16=0 > rd.modules-load=vfio-pci amd_iommu=on iommu=pt amdgpu.modeset=1 [...] Would you try with "iommu=soft", aka disable the hardware one? Maybe try tuning it off entirely.
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